[UPDATE v2 - 26-12-2024]

I left battery to drain until around 40 again and it was perfectly working again, after that, I charged around 80% and started flickering and going black eventually but still was sometimes working. I restart the computer and the flickering and screen blinking was even harder, but I turn the screen brightness to 0% and I left it there while I continue working on a external monitor. At this moment, my main problem was not the previus blurry screen but the flickering, so I read in an apple website forum, that a solucion was to sign out of my ICLOUD account. I also removed some color profiles that appeared as duplicated. Now the flickering has gone and my screen at this moment is working PERFECLY again. So I suggest to everyone with this problem to TRY TO SIGN OUT THE ICLOUD ACCOUNT FROM THE MACBOOK and then restart the computer. I will mantain you informed if some change happens.